we want to know how to set up our barometer or where to go into see the weather patterns to set it up.?

Answer 1

If you have a commercial barometer, it should have an altitude setting, so you set it to match the altitude from the location, which you can get from topographical maps or Google world. Otherwise, if you have made one with water or mercury (handle with care) or mechanically, one way to get numbers is to assume that a reading from a nearby point announced on the radio or TV or on the web (like from www.noaa.gov) will give you a starting point.
On the other hand, almost all of the weather information from a barometer is relative to other readings, not from an absolute number. For example, a falling barometer reading indicates an approaching low pressure area which may mean bad weather, while a rising one indicates incoming high pressure. Once you have recorded a few readings over several days, you will find the readings cover a rather narrow range - even using extreme records, the sea level adjusted average of 29.92"Hg only goes up to under 32"Hg and down to over 26"Hg.
To forecast weather you will have to use rising, falling, and steady high, low and middle along with wind and cloud patterns to make sense of what might be coming. The second link below gives some guidelines for class work with some specific answers for teachers.

Answer 2

both answers are good... You should only need to input elevation and the barometer should work... If you have a GPS reciever you can get the information from that.... or if you do not know how to find out what elevation you live at edit your question with where you are located and I can look it up for you.

Answer 3

The previous answer was pretty good. I can only add that a great source of local barometric readings is www.wunderground.com.
It provides wx info worldwide (just enter your town/postcode etc) Local amateur observers give continuous and comprehensive wx observations including pressure for many cities and towns.